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Chemistry-

General

Easy

Question

The free energy change due to a reaction is zero when

The reactants are initially mixed
A catalyst is added
The system is at equilibrium
The reactants are completely consumed

The correct answer is: The system is at equilibrium

Factual statement

Related Questions to study

The half life of a radioactive element is 20 min. The time interval between the stages of its 33% and 67% decay is

The half life of a radioactive element is 20 min. The time interval between the stages of its 33% and 67% decay is

Chemistry-General

$t subscript 1 divided by 2 end subscript equals$ constant confirms the first order of the reaction as one $a to the power of 2 end exponent t subscript 1 divided by 2 end subscript equals$ constant confirms that the reaction is of

$t subscript 1 divided by 2 end subscript equals$ constant confirms the first order of the reaction as one $a to the power of 2 end exponent t subscript 1 divided by 2 end subscript equals$ constant confirms that the reaction is of

Chemistry-General

The potential energy diagram for a reaction $R rightwards arrow P$ is given below. $increment H to the power of ⊖ end exponent$ of the reaction corresponds to the energy

The potential energy diagram for a reaction $R rightwards arrow P$ is given below. $increment H to the power of ⊖ end exponent$ of the reaction corresponds to the energy

Chemistry-General

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The rate constant for the reaction $2 N subscript 2 end subscript O subscript 5 end subscript rightwards arrow 4 N O subscript 2 end subscript plus O subscript 2 end subscript$ Is $3.0 cross times 10 to the power of negative 5 end exponent s to the power of negative 1 end exponent$ . If the rate is $2.40 cross times 10 to the power of negative 5 end exponent blank m o l blank L to the power of negative 1 end exponent s to the power of negative 1 end exponent$ , then the concentration of $N subscript 2 end subscript O subscript 5 end subscript left parenthesis i n blank m o l blank L to the power of negative 1 end exponent right parenthesis$ is

The rate constant for the reaction $2 N subscript 2 end subscript O subscript 5 end subscript rightwards arrow 4 N O subscript 2 end subscript plus O subscript 2 end subscript$ Is $3.0 cross times 10 to the power of negative 5 end exponent s to the power of negative 1 end exponent$ . If the rate is $2.40 cross times 10 to the power of negative 5 end exponent blank m o l blank L to the power of negative 1 end exponent s to the power of negative 1 end exponent$ , then the concentration of $N subscript 2 end subscript O subscript 5 end subscript left parenthesis i n blank m o l blank L to the power of negative 1 end exponent right parenthesis$ is

Chemistry-General

Consider a reaction; $a G plus b H rightwards arrow P r o d u c t s$ When concentration of both the reactants G and H is doubled, the rate increases by eight times. However, when concentration of G is doubled keeping the concentration of H fixed, the rate is doubled. The overall of the reaction,

Consider a reaction; $a G plus b H rightwards arrow P r o d u c t s$ When concentration of both the reactants G and H is doubled, the rate increases by eight times. However, when concentration of G is doubled keeping the concentration of H fixed, the rate is doubled. The overall of the reaction,

Chemistry-General

The rate of certain hypothetical reaction $A plus B plus C rightwards arrow$ Products, is given by $r equals negative fraction numerator d A over denominator d t end fraction equals k open square brackets A close square brackets to the power of 1 divided by 2 end exponent open square brackets B close square brackets to the power of 1 divided by 3 end exponent open square brackets C close square brackets to the power of 1 divided by 4 end exponent$ The order of a reaction is given by

The rate of certain hypothetical reaction $A plus B plus C rightwards arrow$ Products, is given by $r equals negative fraction numerator d A over denominator d t end fraction equals k open square brackets A close square brackets to the power of 1 divided by 2 end exponent open square brackets B close square brackets to the power of 1 divided by 3 end exponent open square brackets C close square brackets to the power of 1 divided by 4 end exponent$ The order of a reaction is given by

Chemistry-General

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Statement 1: $B F subscript 3 end subscript$ molecule is planar with an angle of 120 ͦC.
Statement 2: $B F subscript 3 end subscript$ has bond pair-lone pair electron ratio 1 : 3.

Statement 1: $B F subscript 3 end subscript$ molecule is planar with an angle of 120 ͦC.
Statement 2: $B F subscript 3 end subscript$ has bond pair-lone pair electron ratio 1 : 3.

Chemistry-General

Statement 1:LiCl is predominantly a covalent compound.
Statement 2:Electronegativity difference between Li and Cl is too small.

Statement 1:LiCl is predominantly a covalent compound.
Statement 2:Electronegativity difference between Li and Cl is too small.

Chemistry-General

Statement 1: $p$ -dimethoxy benzene is polar molecule.
Statement 2:The two methoxy groups at para positions are located as

Statement 1: $p$ -dimethoxy benzene is polar molecule.
Statement 2:The two methoxy groups at para positions are located as

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Statement 1:The bond angle in $B F subscript 3 end subscript$ is smaller than that in $B F subscript 4 end subscript$ .
Statement 2: $B F subscript 3 end subscript$ has $s p to the power of 2 end exponent$ -hybridisation, whereas $B F subscript 4 end subscript superscript minus end superscript$ has $s p to the power of 3 end exponent$ -hybridisation.

Statement 1:The bond angle in $B F subscript 3 end subscript$ is smaller than that in $B F subscript 4 end subscript$ .
Statement 2: $B F subscript 3 end subscript$ has $s p to the power of 2 end exponent$ -hybridisation, whereas $B F subscript 4 end subscript superscript minus end superscript$ has $s p to the power of 3 end exponent$ -hybridisation.

Chemistry-General

Which of the following has maximum bond energy?

Which of the following has maximum bond energy?

Chemistry-General

The hybride orbital of the central atom in $A l F subscript 4 end subscript superscript minus end superscript$ is

The hybride orbital of the central atom in $A l F subscript 4 end subscript superscript minus end superscript$ is

Chemistry-General

parallel

Chelation can occur in

Chelation can occur in

Chemistry-General

The number of electron dots in Lewis structure indicates

The number of electron dots in Lewis structure indicates

Chemistry-General

The $B C l subscript 3 end subscript$ is a planar molecular whereas $N C l subscript 3 end subscript$ is pyramidal because

The $B C l subscript 3 end subscript$ is a planar molecular whereas $N C l subscript 3 end subscript$ is pyramidal because

Chemistry-General

parallel

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